{"product_id":"3-00-21-dirt-bike-replacement-inner-tube-with-tr4-valve-3-00-21-80-100-21","title":"3.00-21 Dirt Bike Replacement Inner Tube with TR4 Valve 3.00-21 (80\/100-21)","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThis aftermarket replacement inner tube is designed for dirt bike tires using a 3.00-21 size. It features a TR4 valve and is also identified with the 80\/100-21 tire size reference.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAftermarket replacement inner tube\u003c\/li\u003e\n\u003cli\u003e3.00-21 size\u003c\/li\u003e\n\u003cli\u003e80\/100-21 size reference\u003c\/li\u003e\n\u003cli\u003eTR4 valve\u003c\/li\u003e\n\u003cli\u003eDesigned for dirt bike tire applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility \u0026amp; Fitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDirt bike tire application\u003c\/li\u003e\n\u003cli\u003e3.00-21 tire size\u003c\/li\u003e\n\u003cli\u003e80\/100-21 tire size reference\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eProduct Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eProduct Type: Replacement inner tube\u003c\/li\u003e\n\u003cli\u003eSize: 3.00-21\u003c\/li\u003e\n\u003cli\u003eAlternate Size Reference: 80\/100-21\u003c\/li\u003e\n\u003cli\u003eValve Type: TR4\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What is this inner tube used for? \u003cstrong\u003eA:\u003c\/strong\u003e It is used as a replacement inner tube for a dirt bike tire matching the listed size and valve type.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e How should I verify fitment before purchase? \u003cstrong\u003eA:\u003c\/strong\u003e Confirm that your existing tire uses the 3.00-21 or 80\/100-21 size and a TR4 valve before ordering.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eThis is an aftermarket replacement part for the referenced application and is not represented as genuine or original equipment. Compatibility may vary by model, production date, serial number, or existing part number. Verify fitment before purchase.\u003c\/em\u003e\u003c\/p\u003e","brand":"RivetOak","offers":[{"title":"Default Title","offer_id":49123937943652,"sku":"LL1B10909","price":67.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0804\/6647\/7156\/files\/s-l1600_13d1b8a0-266d-4261-8dd0-5898df42b81d.jpg?v=1789146155","url":"https:\/\/www.rivetoak.com\/products\/3-00-21-dirt-bike-replacement-inner-tube-with-tr4-valve-3-00-21-80-100-21","provider":"RivetOak","version":"1.0","type":"link"}